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Finding the Fourth Proportional to 6,240.76, 9,358 and 2,079.31

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Solution

The fourth proportional to 6,240.76, 9,358 and 2,079.31 is: 3,117.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,240.76 : 9,358 = 2,079.31 : x
  2. Step 2: Convert to fraction form
    6,240.76/9,358 = 2,079.31/x
  3. Step 3: Cross multiply
    6,240.76x = 9,358 × 2,079.31
  4. Step 4: Simplify right side
    6,240.76x = 19,458,182.98
  5. Step 5: Solve for x
    x = 19,458,182.98/6,240.76
  6. Step 6: Final answer
    x = 3,117.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.